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Academic literature on the topic 'Anabaena'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2023

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Journal articles on the topic "Anabaena"

1

Rosales Loaiza, Néstor, Patricia Vera, Cateryna Aiello-Mazzarri, and Ever Morales. "COMPARATIVE GROWTH AND BIOCHEMICAL COMPOSITION OF FOUR STRAINS OF Nostoc AND Anabaena (CYANOBACTERIA, NOSTOCALES) IN RELATION TO SODIUM NITRATE." Acta Biológica Colombiana 21, no. 2 (April 5, 2016): 347–54. http://dx.doi.org/10.15446/abc.v21n2.48883.

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<p>Nitrogen concentration is an essential parameter in cyanobacterial cultures to produce enriched biomass with agricultural purposes. Growth and biochemical composition of Nostoc LAUN0015,Nostoc UAM206, Anabaena sp.1 and Anabaena sp.2 was compared at 0, 4.25, 8.5 and 17 mM NaNO3. Cultures under laboratory conditions were maintained for 30 days at a volume of 500 mL. Anabaenasp.1 yielded the highest value of dry mass of 0.26 ± 2.49 mg mL-1 at 8.5 mM NaNO3. For chlorophyll, phycocyanin and phycoerythrin were achieved maximum values at 17 mM NaNO3 with 18.09 ± 1.74, 102.90 ± 6.73 and 53.47 ± 2.40 μg mL-1, respectively. Nostoc LAUN0015 produced its maximum value of protein 644.86 ± 19.77 μg mL-1, and 890 mg mL-1 of carbohydrates in the absence of nitrogen. This comparative study shows that the most efficient strain for the production of protein, carbohydrates and lipids in diazotrophic conditions corresponded to Nostoc LAUN0015. However, Anabaena sp.1 and Anabaena sp.2 required high concentrations of nitrogen to achieve higher values of metabolites, comparing with Nostoc strains. Nitrogen dependence for the production of pigments and high protein production in strains of Anabaena and in diazotrophic conditions for Nostoc was demonstrated. Nostoc can be cultured under nitrogen deficiency andAnabaena in sufficiency, for mass production of biomass with good nutritional profile.</p>

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2

Plazinski, Jacek, Lynn Croft, Rona Taylor, Qi Zheng, Barry G. Rolfe, and Brian E. S. Gunning. "Indigenous plasmids in Anabaena azollae: their taxonomic distribution and existence of regions of homology with symbiotic genes of Rhizobium." Canadian Journal of Microbiology 37, no. 3 (March 1, 1991): 171–81. http://dx.doi.org/10.1139/m91-027.

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The method of horizontal agarose gel electrophoresis was used to demonstrate the presence of indigenous plasmid DNAs in different isolates of the symbiotic cyanobacterium Anabaena azollae. All isolates extracted from seven distinct species of the host fern Azolla were found to possess one to three cryptic plasmids ranging in sizes from 35 to 100 MDa (million daltons). Anabaenas isolated from Azolla caroliniana, Az. nilotica, and Az. pinnata species contained a single plasmid band of molecular mass approximately 60 MDa, whereas other endosymbiotic cyanobacteria extracted from Azolla filiculoides, Az. rubra, Az. mexicana, and Az. microphylla were shown to possess two or three covalently closed circular (CCC) DNAs. Cloned DNA fragments derived from the plasmid sequences of two different An. azollae isolates were used as hybridization probes. Hybridization data indicated that these symbiotic cyanobacteria possess different but related plasmid species and that it is possible to construct specific plasmid DNA probes capable of distinguishing among several strains of the symbiotic anabaenas. Several heterologous DNA probes, including Rhizobium symbiotic genes, were used to seek homologous sequences on the An. azollae plasmids. DNA sequences homologous to the nod box and nodMN genes were present on the Anabaena plasmids. Moreover, homology of a key Rhizobium exopolysaccharide (exoY) gene to the An. azollae CCC DNAs was detected. In addition, the introduction of the An. azollae plasmid clone into Rhizobium Exo− mutant (exoY) resulted in the Exo+ transconjugants. Those findings suggest that some of the An. azollae plasmids may play a role in symbiotic interactions with Azolla fem. Key words: Anabaena azollae, Azolla, symbiosis, cyanobacterium, plasmids.

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3

Matz, Carlyn J., Michael R. Christensen, Auralee D. Bone, Courtney D. Gress, Scott B. Widenmaier, and Harold G. Weger. "Only iron-limited cells of the cyanobacterium Anabaena flos-aquae inhibit growth of the green alga Chlamydomonas reinhardtii." Canadian Journal of Botany 82, no. 4 (April 1, 2004): 436–42. http://dx.doi.org/10.1139/b04-022.

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Cocultivation of iron-limited cells of the cyanobacterium Anabaena flos-aquae (Lyng.) Brèb. and the green alga Chlamydomonas reinhardtii Dangeard resulted in growth of Anabaena but not Chlamydomonas, even in the presence of excess exogenous iron. This effect was also observed during the cultivation of Chlamydomonas in a medium in which iron-limited Anabaena cells had been growing, but were removed prior to culture of Chlamydomonas. Conversely, iron-limited Chlamydomonas cells grew very well in medium from iron (nutrient)-sufficient, phosphate-limited, and nitrogen-limited Anabaena cultures. Iron-limited Anabaena cultures produced siderophores, while the other types of Anabaena cultures did not. Treatment of Anabaena iron-limited medium with activated charcoal completely removed the inhibitory effect on Chlamydomonas growth, and boiling the medium removed most of the inhibitory effect. Both the charcoal and the boiling treatments also removed siderophores from the medium. Partially purified Anabaena siderophore preparations were also inhibitory to Chlamydomonas growth. The inhibitory effect of iron-limited Anabaena medium could be partially overcome by addition of excess micronutrients (especially cobalt copper) but not by addition of iron. We suggest that Anabaena-derived siderophores, present only in iron-limited Anabaena medium, inhibit the growth of Chlamydomonas cells via a previously uncharacterized toxicity. This effect is different from previously described experiments in which cyanobacterial siderophores suppressed green algal growth via competition for limiting amounts of iron.Key words: Anabaena, Chlamydomonas, cocultivation, iron limitation, micronutrients; siderophores.

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4

Rajopadhyaya, Ritu, Sangita Joshi, Sabitri Shrestha, and Shiva Kumar Raj. "Some New and Interesting Cyanobacteria from Baghjhoda Pond, Eastern Nepal." Himalayan Journal of Science and Technology 1 (December 1, 2017): 1–8. http://dx.doi.org/10.3126/hijost.v1i0.25814.

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Cyanobacteria of BaghJhoda pond in three different seasons hav been studied. A total of 8 cyanophycean algae under 6 genera viz., Anabaena, Aphanocapsa, Chroococcus, Oscillatoria, Phormidium and Spirulina were recorded. Anabaena, Oscillatoria and Phormidium were dominant genera and occurred in all three seasons. All the 8 taxa were new for the study area and Anabaena affinis and Anabaena subcylindrical were new records for Nepal.

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5

Patil, Keerthi, and Doris M. Singh. "OPTIMIZATION OF CULTURE MEDIA FOR THE GROWTH OF ANABAENA PCC550, ANABAENA PCC 574, AND CYLINDROSPERMUM PCC518, CYLINDROSPERMUM PCC 567." Journal of Advanced Scientific Research 13, no. 06 (July 31, 2022): 106–10. http://dx.doi.org/10.55218/jasr.202213619.

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In the present study, Anabaena PCC550, Anabaena PCC574 and Cylindrospermum PCC518, Cylindrospermum PCC 567 have been subjected to 7 different inorganic culture media. In order to identify the best growth medium i.e.; optimized medium, the nutrient requirement of these two algae have been evaluated as prime requisite. The present investigation analyzed the growth of wet biomass of the four microalgae. In order to attain optimal growth of Anabaena and Cylindrospermum species, the 7 culture media employed in the current study were (i) BG11 medium (ii) Knoops medium (iii) Cyanophycean agar medium (iv) Modified Bristols medium (v) Prigsheims Medium (vi) Foggs Medium and (vii) Algal culture medium. Highest growth on 60th day was seen in Cylindrospermum PCC 518 (0.134mg/100ml), Anabaena PCC 574 (0123mg/100ml), Cylindrospermum PCC 567 (0.098mg/100ml), Anabaena PCC 550 (0.094mg/100ml) in Algal culture media which shows luxurient growth when compared to BG11, Foggs Media, Modified Bristols media, Knoops media. While, Prigsheims medium did not show any growth of Anabaena PCC550, Anabaena PCC574 and Cylindrospermum PCC518, Cylindrospermum PCC 567.

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6

Peters, G. A., D. Kaplan, and H. E. Calvert. "Solar-powered N2 fixation in ferns: the Azolla-Anabaena symbioses." Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences 86 (1985): 169–77. http://dx.doi.org/10.1017/s0269727000008101.

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SynopsisThe heterosporous aquatic ferns in the genus Azolla contain a heterocystous cyanobacterium, Anabaena azollae, as a symbiont. The Anabaena occupies cavities formed in the aerial dorsal leaf lobes of the ferns and can provide the symbiotic associations with their total N requirement via the fixation of atmospheric nitrogen. The photosynthetic pigments of the fern and cyanobacterium are complementary. Photosynthesis is of course the source of energy for growth and the ultimate source of the ATP and reductant required for N2 fixation in the light or dark. However, nitrogen fixation is maximal in the light and the phycobili-proteins of the Anabaena are as effective as its chlorophyll in driving this photosystem I-linked process.The partners exhibit a coordinated pattern of development with the Azolla exerting a control over the Anabaena, affecting both its metabolism and differentiation. Anabaena filaments associated with the fern apices lack heterocysts. As cavities are formed and occupied by the Anabaena, it differentiates a high proportion of heterocysts and exhibits nitrogenase activity. In mature cavities, the Anabaena receives fixed carbon from the Azolla and releases fixed N2 as ammonium. The ammonium is assimilated and/or transported by the Azolla toward its stem apices. Special epidermal cavity trichomes, which are intimately associated with the Anabaena at all stages in the ontogeny of the association, may facilitate metabolite exchange between the fern and cyanobacterium.

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7

Chen, Pei-Chung. "Physiology of Nitrogen Fixation in Two New Strains of Anabaena." Zeitschrift für Naturforschung C 40, no. 5-6 (June 1, 1985): 406–8. http://dx.doi.org/10.1515/znc-1985-5-620.

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Abstract Two different cyanobacteria, Anabaena CH 1 and CH2, were isolated from Taiwan paddy soils. Both strains can grow well with daily dilution method. Anabaena CH1 shows a blue-green color and Anabaena CH2 a green brownish one. Nitrogenase activity decreased as cultures were transferred from light to dark. When a darkened culture was placed again into the light, nitrogenase activity recovered within two hours, but not in the presence of chloramphenicol. Energy supply for nitrogenase within both strains was different. Nitrogenase activity of Anabaena CH1 was light-dependent and oxygen in heterocyst was exhausted through oxyhydrogen reaction. Except photosynthesis, respiration may be used as energy source for nitrogenase in Anabaena CH2. Respiration was the major one to protect nitrogenase against oxygen.

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8

Qian, Kuimei, Martin Dokulil, and Yuwei Chen. "Do the regular annual extreme water level changes affect the seasonal appearance of Anabaena in Poyang Lake?" PeerJ 7 (April 12, 2019): e6608. http://dx.doi.org/10.7717/peerj.6608.

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Background Poyang Lake is an ecosystem experiencing annual variations in water level of up to 14 m. Water level changes were 8.03 and 11.22 m, respectively, in the years 2013 and 2014. The biomass and heterocyst frequency of Anabaena increased in the summers of recent years. Methods A weekly to bi-weekly monitoring from June to November 2013 and 2014 was set up to explain the variations of Anabaena appearance in different phases of the water level. Results Anabaena was present in the lake throughout the year. The average relative biomass of Anabaena in the present study was over 40%, being most abundant in summer. The average heterocyst frequency was 0.23% in 2013 and 0.76% in 2014. Correlation analysis indicated a positive trend of Anabaena biomass with water temperature and water level and a negative one with total nitrogen (TN), which is the reason for the increase of heterocyst frequency in 2013 and 2014. Heterocyst frequency of Anabaena was positively correlated with water temperature, water level and PO4-P, and negatively with dissolved inorganic nitrogen (DIN/DIP), NO3-N and TN. Moreover, water temperature and DIN/DIP were significantly correlated with water level, indicating that water level changes have a direct effect on Anabaena and heterocyst formation in Poyang Lake. Conclusions The results of this study support the hypothesis that increasing biomass and heterocyst formation of Anabaena can be primarily caused by seasonal changes of the water level in Poyang Lake.

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Liengen, Turid. "Environmental factors influencing the nitrogen fixation activity of free-living terrestrial cyanobacteria from a high arctic area, Spitsbergen." Canadian Journal of Microbiology 45, no. 7 (August 1, 1999): 573–81. http://dx.doi.org/10.1139/w99-040.

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The influence of environmental factors on the nitrogen fixation activity of free-living, terrestrial cyanobacteria from a high arctic area were investigated using experimental manipulations with two different types of field samples, including macroscopic sheets of Nostoc commune and soil samples with a cyanobacterial crust from a Puccinellia salt marsh. In addition, a cultured Anabaena sp. previously isolated from the salt marsh was examined. Nitrogen fixation activity was measured using the acetylene reduction method. The nitrogen fixation mainly took place in the light, but even after 12 h incubation in darkness, low activities were maintained. Phosphorus fertilization stimulated the nitrogen fixation activity, and the highest activities were obtained with about 300 μM phosphate, both in the field samples and the cultured Anabaena sp. Ammonium (28 mM) immediately inhibited the nitrogen fixation activity of the cultured Anabaena sp, whereas 14 mM urea and 540 μM glutamate led to a weaker and slower inhibition of the nitrogen fixation activity, showing that the cultured Anabaena sp. was able to assimilate these combined nitrogen sources. Nitrate did not have any inhibitory effect on nitrogen fixation activity, either in the field samples or in the cultured Anabaena sp. Both the field samples and the cultured Anabaena sp. showed tolerance against sodium chloride concentrations corresponding to the concentration in seawater. The temperature optimum of the nitrogen fixation activity of the cultured Anabaena sp. was about 20°C. Key words: nitrogen fixation, cyanobacteria, Nostoc commune, Anabaena sp., high arctic.

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10

Kirjakov, Ivan Kirilov, and Katya Naneva Velichkova. "A new cyanobacterial species of Anabaena genus (Nostocales, Cyanobacteria) from Bulgaria." Anales de Biología, no. 38 (May 17, 2016): 69–72. http://dx.doi.org/10.6018/analesbio.38.06.

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Se describe una nueva especie del género de Cyanobacterias, Anabaena Bory ex Born. et Flah. (Nostocales) de las montañas Ródope de Bulgaria. Anabaena rhodopensis sp. nova. tiene acinetas con paredes celulares esculpidas. Se dan los datos biométricos para el tamaño de las células vegetativas, heterocistos y acinetos.A new species of cyanobacterial genus Anabaena Bory ex Born. et Flah. (Nostocales) from Rhodope Mountains in Bulgaria is described. Anabaena rhodopensis sp. nova. has akinetes with sculptured cell walls. Biometrical data for size of vegetative cells, heterocytes and akinetes are given.

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Dissertations / Theses on the topic "Anabaena"

1

Hur, Jae-Seoun. "Effects of air pollution on Azolla-Anabaena symbiosis." Thesis, Lancaster University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359764.

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Clark, D. R. "Some aspects of DNA synthesis in Anabaena 2C." Thesis, University of Liverpool, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383453.

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3

Arnold, Matthias. "Molekulargenetische Charakterisierung von Untereinheiten des Cytochrom-b6f-Komplexes von Cyanobakterien der Gattung Anabaena." [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963645994.

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Moslavac, Suncana. "Outer membrane proteins of Anabaena sp. strain PCC 7120." Diss., lmu, 2007. http://nbn-resolving.de/urn:nbn:de:bvb:19-72771.

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Vargas, Sarah Regina. "Produção de hidrogênio por Chlamydomonas spp. e Anabaena spp." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-21032017-100636/.

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O uso intensificado de combustíveis fósseis como fonte de energia, vê-se a necessidade do desenvolvimento de novas tecnologias, principalmente as renováveis, como o hidrogênio, que possui vantagens por ser elemento abundante no universo, ser renovável e não poluente. A utilização de microalgas e cianobactérias é uma alternativa para a produção de biohidrogênio a partir da quebra da água e de compostos orgânicos. De acordo com isso, nesta pesquisa foram testados diversos fatores físico-químicos e nutricionais nas condições de cultivo de cepas de Chlamydomonas spp. e Anabaena spp. Para tanto, cepas selecionadas foram cultivadas em duas fases experimentais, a primeira aeróbia e a segunda anaeróbia, para proporcionar produção de hidrogênio por biofotólise direta anaeróbia, via hidrogenase, sob privação de enxofre para a clorofícea, e de nitrogênio para a cianobactéria, estimulando para esta também a produção por biofotólise indireta, via nitrogenase. A cepa com melhor produtividade de hidrogênio, de cada gênero, foi selecionada para a etapa de otimização das fases experimentais de cultivo. Durante os ensaios foram realizadas análises de produção máxima, velocidade de produção, volume e produtividade de hidrogênio, além de análises de concentração de biomassa, físico-químicas, bioquímicas e geração de subprodutos. O método utilizado foi eficiente para produção de hidrogênio e ficou comprovada a diferença de produção de hidrogênio entre diferentes cepas. Anabaena sp. obteve produtividade média de hidrogênio quatro vezes maior, aproximadamente de 76,8 µmol.L-1.h-1, comparada a C. reinhardtii, com média de 18,6 µmol.L-1.h-1.
The intensifying use of fossil fuels as energy source, one sees the need to develop new technologies, especially renewable, such as hydrogen. This has advantages because hydrogen is an abundant element in the universe, be renewable and non-polluting. The use of microalgae and cyanobacteria is an alternative for the production of bio-hydrogen of breaking water and organic compounds. Accordingly, in this study were tested several physic-chemical factors and nutrition in growing conditions of Chlamydomonas spp. and Anabaena spp. strains. For this purpose, strains selected were cultured in two experimental phases, first aerobic and second anaerobic, to hydrogen production by direct biofotolise anaerobic, via hydrogenase, under sulfur deprived to chlorofycea, and nitrogen to cyanobacterium, for this also to production by indirect biofotolise, via nitrogenase. The strain with highest productivity of hydrogen, of each gender, was selected for the optimization of the experimental stages of cultivation. During the tests were analyzes of maximum production, velocity, volume and productivity of hydrogen, and analysis of biomass concentration, physic-chemical, biochemical and generation of by-products. The method used was efficient for the production of hydrogen and was different between strains. Anabaena sp. obtained average yield four times highest, approximately 76.8 µmol. L-1.h-1compared to C. reinhardtii, averaging 18.6 µmol. L-1.h-1.

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Gerphagnon, Mélanie. "Ecologie des chytrides parasites de la cyanobactérie Anabaena macrospora." Thesis, Clermont-Ferrand 2, 2013. http://www.theses.fr/2013CLF22385/document.

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En raison des forçages anthropiques exercés sur les écosystèmes aquatiques et des effets des changements globaux présents et à venir, on s’attend à une augmentation de la fréquence et de l’intensité des proliférations cyanobactériennes lacustres. Une meilleure connaissance des facteurs biotiques, et notamment du parasitisme, impliqués dans le control des dynamiques cyanobactériennes semble essentielle. Il est désormais établi que les Chytridiomycota (chytrides) constituent les principaux pathogènes fongiques du phytoplancton. Ainsi, les travaux de recherche menés au cours de cette thèse ont eu pour objectif d’étudier le parasitisme fongique associé aux efflorescences cyanobactériennes, et plus précisément l’écologie des chytrides parasites de la cyanobactérie Anabaena macrospora, espèce filamenteuse présentant des proliférations massives et récurrentes dans le lac d’Aydat (France). Par la mise en place d’un schéma d’échantillonnage temporel et spatial à haute fréquence et prenant en compte deux années consécutives (2010 et 2011), nous avons pu (i) étudier les cycles de vie des deux espèces de parasites fongiques associées à A. macrospora, (ii) évaluer l’impact de ces parasites sur la dynamique de la population cyanobactérienne, et (iii) caractériser des facteurs contrôlant la dynamique des systèmes hôtes-parasites d’intérêt. De plus, (iv) afin de mettre en exergue les relations étroites existantes entre l’hôte et la production fongique associée, nous avons mis au point des protocoles méthodologiques permettant une analyse microscopique fine de l’hôte, des sporanges et de leur contenu en zoospores (fécondité des chytrides). Les résultats acquis mettent en évidence la coexistence de deux espèces de chytrides, Rhizosiphon crassum et R. akinetum, associées à A. macrospora. La reconstruction des cycles de vie par analyse d’images prises à partir d’échantillons naturels nous a permis de montrer que les deux chytrides présentaient une durée de leur cycle de vie similaire, et estimée à environ 3j. pour R. crassum. Cependant, ces deux espèces se différencient d’un point de vue fonctionnel en parasitant des types cellulaires distincts : R. crassum influence directement la biomasse active en parasitant les cellules végétatives, alors que R. akinetum parasite les cellules de résistances (akinètes) de A. macrospora. Cette dernière espèce peut donc avoir un impact sur le recrutement, la structure génétique et la variabilité interannuelle de la population hôte. Par ailleurs, outre leur impact direct, nous montrons que l’action des chytrides parasites peut aboutir à une fragmentation mécanique des filaments de A. macrospora, augmentant potentiellement la perte de biomasse cyanobactérienne par broutage. De plus, nous avons pu mettre en évidence que la production zoosporique des chytrides dépendait des ressources nutritives disponibles tant d’un point vue quantitatif (taille de l’hôte) que qualitatif (groupe phytoplanctonique parasité, métabolisme de l’hôte...). La réduction de la biomasse active de cyanobactéries, la fragmentation mécanique, ainsi que la production de zoospores dont la qualité nutritive pour le zooplancton a été démontrée, établissent les chytrides comme lien trophique entre les proliférations cyanobactériennes filamenteuses « inedible », considérée comme impasses trophiques, et les niveaux trophiques supérieurs. Enfin, l’ensemble des résultats acquis montre l’intérêt de prendre en compte, désormais, le rôle fonctionnel des champignons microscopiques parasites, notamment comme agents régulateurs direct et indirect du développement phytoplanctonique. Cette prise en compte permettrait, sans aucun doute, d’améliorer les modèles de transferts de matière et d’énergie qui transitent dans les écosystèmes aquatiques, dans le contexte général d’optimiser la gestion des plans d’eau
Face to both the important anthropogenic input in nutrients and the global change, numerous authors predict that the cyanobacterial blooms will increase in relative abundance in aquatic ecosystems. An exhaustive knowledge of the driving biotic factors of the cyanobacterial dynamic is essential. In lakes, the most common fungal parasites of phytoplankton belong to the phylum Chytridyomycota (i.e. chytrids). The aim of the thesis was to investigate the fungal parasitism associated to the cyanobacterial blooms, particularly the ecology of chytrids parasitizing the filamentous cyanobacterial species Anabaena macrospora, in Lake Aydat (France). During two successive years (2010-2011), investigations on (i) the chytrid cycle of life of two chytrid species parasitizing A. macrospora, (ii) the impact of the fungal parasitism on the cyanobacterial bloom dynamic and (iii) driving factors of the host-parasite pairings dynamics have been led during two spatio-temporal surveys using high resolution sampling strategies. Moreover (iv) a double staining method based on a combination of CFW and SYTOX green for counting, identifying, and investigating the fecundity of phytoplankton fungal parasites and the putative relationships established between hosts and their fungal parasites has been developed. Results underlined the coexistence of two chytrids, Rhizosiphon crassum and R. akinetum, which have similar life cycles but differed in their infective regimes depending on the cellular niches offered by their host. R. crassum infected both vegetative cells and akinetes while R. akinetum infected only akinetes. A reconstruction of the developmental stages suggested that the life cycle of R.crassum was completed in about 3 days. By infecting akinetes, R. akinetum could reduce or modify the genetic structure of the cyanobacterial bloom of the following year. Furthermore, chytrids may reduce the length of filaments of Anabaena macrospora significantly by ‘‘mechanistic fragmentation’’ following infection. All these results suggest that chytrid parasitism is one of the driving factors involved in the decline of cyanobacterial blooms, by direct mortality of parasitized cells and indirectly by the mechanistic fragmentation, which could weaken the resistance of A. macrospora to grazing. Moreover, we underlined that the production of zoospore depends on the nutritional host quantity (host size) and quality (host phytoplanktonic group, host metabolism...). The decrease of the cyanobacterial active biomass, mechanistic fragmentation, and production of zoospores which exhibit a high nutritional quality for the zooplankton, established the chytrids as a real link between the inedible filamentous cyanobacteria, considered as trophic dead ends, and the higher trophic levels. Overall, we consider that the acquisition of our data places the chytrid parasitism as an important driving factor of the phytoplankton dynamic, allowing the inclusion of fungi and their main function (parasitism) in the energy and matter fluxes in the pelagic ecosystems

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7

Jackson, Gardner H. "Biotransformation of 2,4,6-trinitrotoluene (TNT) by the cyanobacterium anabaena spiroides." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/20862.

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8

Bancroft, I. "An analysis of some cyanophages which infect Anabaena PCC 7120." Thesis, Lancaster University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379568.

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9

Li, Lih-Ann. "Molecular and biochemical studies of rubisco activation in Anabaena species /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487859879938986.

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10

Aldea, Maria Ramona. "Identification of novel regulatory mechanisms controlling heterocyst development in Anabaena Sp. strain PCC 7120." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2996.

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Books on the topic "Anabaena"

1

Reiner, Sabine. Modifikation der Nitrogenase als Regulationsprinzip in dem heterocystenbildenden Cyanobakterium Anabaena variabilis. Konstanz: Hartung-Gorre, 1990.

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2

Watanabe, Masayuki. Nihon aoko daizukan: The freshwater planktonic blue-greens of Japan with photographs and illustrations / by Masayuki Watanabe. Tōkyō: Seibundō Shinkōsha, 2007.

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3

E, Semenenko V., ed. Fotosintez i azotfiksat͡s︡ii͡a︡ v simbioticheskoĭ sisteme Azolla-Anabaena azollae. Moskva: "Nauka", 1988.

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4

Alpes, Irene. Respiratorische NAD(P)H-Dehydrogenasen aus dem Cyanobakterium Anabaena variabilis. Konstanz: Hartung-Gorre, 1988.

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Schrautemeier, Bernhard. In vitro-Untersuchungen zur Integration der Stickstoffixierung in den Licht- und Dunkelstoffwechsel von Heterocysten des Cyanobacteriums Anabaena variabilis. Konstanz: Hartung-Gorre, 1985.

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6

Hashemi, Fereshteh Sadat. Tolerance of Anabaena variabilis and other cyanobacteria to copper and other metals. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1993.

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7

Hodge, Sarah Anne. The study of protein serine/threonine kinase mediated phosphorylation in the cyanobacterium anabaena sp. strain PCC7120. [s.l.]: typescript, 1994.

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8

Anabasa: (1964-1984). Beograd: Prosveta, 1986.

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9

Andreeva, Svetlana. Kamenʹ schastʹi︠a︡: 100 rasskazov ob "Almazakh Anabara". I︠A︡kutsk: Izdatelʹskiĭ t︠s︡entr "Inspaer", 2013.

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10

Faktor-faktor yang menunjang KUD Anabanua, Kecamatan Maniangpajo sebagai suatu KUD model di Kabupaten Wajo. Ujung Pandang: Sub Proyek Riset Institusional, Universitas Hasanuddin, 1988.

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Book chapters on the topic "Anabaena"

1

Lin, Cang, Y. D. Yang, X. L. Zhang, and C. C. Liu. "The Roles of Anabaena Azollae in Anabaena-Azolla Association." In Nitrogen Fixation, 543–44. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3486-6_117.

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Adamson, Heather, Caroline Walker, Annette Bees, and Trevor Griffiths. "Protochlorophyllide Reduction in Anabaena." In Progress in Photosynthesis Research, 483–86. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-017-0519-6_98.

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Wolk, C. Peter. "Heterocyst Formation in Anabaena." In Prokaryotic Development, 83–104. Washington, DC, USA: ASM Press, 2014. http://dx.doi.org/10.1128/9781555818166.ch4.

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Wolk, C. Peter. "Anabaena sp. Strain PCC 7120." In Bacterial Genomes, 599–604. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-6369-3_47.

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Fillat, M. F., and C. Gomez-Moreno. "Reactivation of Dark-Inactivated Anabaena FNR." In Current Research in Photosynthesis, 1623–26. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0511-5_373.

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van Hove, Charles, and André Lejeune. "Applied Aspects of Azolla-Anabaena Symbiosis." In Cyanobacteria in Symbiosis, 179–93. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/0-306-48005-0_10.

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Forni, C., M. Grilli Caiola, and S. Gentili. "Bacteria in the Azolla-Anabaena symbiosis." In Nitrogen Fixation with Non-Legumes, 83–88. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0889-5_10.

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Carrapiço, F., and R. Tavares. "New data on the Azolla-Anabaena symbiosis." In Nitrogen Fixation with Non-Legumes, 89–94. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0889-5_11.

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Carrapiço, F., and R. Tavares. "New data on the Azolla-Anabaena symbiosis." In Nitrogen Fixation with Non-Legumes, 95–100. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0889-5_12.

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Watanabe, I., C. Lin, C. Ramirez, M. T. Lapis, T. Santiago-Ventura, and C. C. Liu. "Physiology and agronomy of Azolla-Anabaena symbiosis." In Nitrogen Fixation with Non-Legumes, 57–62. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0889-5_6.

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Conference papers on the topic "Anabaena"

1

Guo, Lili, Rongsong Huang, Xiahua Chen, Jinzhi Liao, and Jianying Shen. "Toxicity Testing of Bensulfuron-Methylto Anabaena azotica." In 2015 Seventh International Conference on Measuring Technology and Mechatronics Automation (ICMTMA). IEEE, 2015. http://dx.doi.org/10.1109/icmtma.2015.333.

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Heng, Ri-Liang, Euntaek Lee, and Laurent Pilon. "Radiation Characteristics of Filamentous Cyanobacteria Anabaena Cylindrica." In RAD-13. Proceedings of the 7th International Symposium on Radiative Transfer, June 2-8, 2013, Kusadasi, Turkey. Connecticut: Begellhouse, 2013. http://dx.doi.org/10.1615/ichmt.2013.intsympradtransf.160.

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Dudnicenco, Tatiana. "Heavy-metal toxicity in the cyanobacterium anabaena variabilis." In National Scientific Symposium With International Participation: Modern Biotechnologies – Solutions to the Challenges of the Contemporary World. Institute of Microbiology and Biotechnology, Republic of Moldova, 2021. http://dx.doi.org/10.52757/imb21.023.

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Carrapico, Francisco J. "Azolla-anabaena-bacteria system as a natural microcosm." In International Symposium on Optical Science and Technology, edited by Richard B. Hoover, Gilbert V. Levin, Roland R. Paepe, and Alexei Y. Rozanov. SPIE, 2002. http://dx.doi.org/10.1117/12.454763.

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"Bayesian network model of Anabaena blooms in Grahamstown Lake." In 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand (MSSANZ), Inc., 2011. http://dx.doi.org/10.36334/modsim.2011.e11.williams.

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Wan, Qidong, Xiumin Sun, Rui Chen, Peizhong Zheng, Wenyu Lu, and Jianying Shen. "Notice of Retraction: Factors Affecting Akinete Differentiation in Anabaena flos-aquae." In 2011 5th International Conference on Bioinformatics and Biomedical Engineering. IEEE, 2011. http://dx.doi.org/10.1109/icbbe.2011.5780922.

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Ma, Meirong, Xiaoju Shi, Limin Cao, and Zongwu Deng. "The operation of photosynthetic microbial fuel cells powered by Anabaena variabilis." In 2013 International Conference on Materials for Renewable Energy and Environment (ICMREE). IEEE, 2013. http://dx.doi.org/10.1109/icmree.2013.6893833.

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Luu, Pham Thanh, Tran Thi Hoang Yen, Tran Thanh Thai, and Ngo Xuan Quang. "TOXIC EFFECTS OF Anabaena sp. ISOLATED FROM TRI AN RESERVOIR ON Daphnia." In NGHIÊN CỨU CƠ BẢN TRONG LĨNH VỰC KHOA HỌC TRÁI ĐẤT VÀ MÔI TRƯỜNG. Publishing House for Science and Technology, 2019. http://dx.doi.org/10.15625/vap.2019.000236.

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Agathangelou, Damianos, Alexandre Cheminal, Jeremie Leonard, Hideki Kandori, Kwan-Hwang Jung, and Stefan Haacke. "Ultrafast Photoisomerization in Anabaena Sensory Rhodopsin: High Speed but Small Quantum Yield." In International Conference on Ultrafast Phenomena. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/up.2016.utu4a.38.

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Agathangelou, D., S. Haacke, Y. Orozco-Gonzalez, M. del Carmen Marin Perez, J. Brazard, H. Kandori, K. H. Jung, N. Ferre, J. Leonard, and M. Olivucci. "Effect of Point Mutations on the Ultrafast Photo-Isomerization of Anabaena Sensory Rhodopsin." In 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, 2019. http://dx.doi.org/10.1109/cleoe-eqec.2019.8872472.

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Reports on the topic "Anabaena"

1

James W Golden. Regulation of Development and Nitrogen Fixation in Anabaena. Office of Scientific and Technical Information (OSTI), August 2004. http://dx.doi.org/10.2172/838436.

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2

Golden, James W. Regulation of Development and Nitrogen Fixation in Anabaena. Office of Scientific and Technical Information (OSTI), October 2008. http://dx.doi.org/10.2172/939624.

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Lammers, Peter. Iron acquisition by cyanobacteria: siderophore production and iron transport by Anabaena. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.407.

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Jones, Karen. Analysis of ferredoxin and flavodoxin in Anabaena and Trichodesmium using fast protein liquid chromatography. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.5696.

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Pokrzywinski, Kaytee, Cliff Morgan, Scott Bourne, Molly Reif, Kenneth Matheson, and Shea Hammond. A novel laboratory method for the detection and identification of cyanobacteria using hyperspectral imaging : hyperspectral imaging for cyanobacteria detection. Engineer Research and Development Center (U.S.), June 2021. http://dx.doi.org/10.21079/11681/40966.

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Abstract:

To assist US Army Corps of Engineers resource managers in monitoring for cyanobacteria bloom events, a laboratory method using hyperspectral imaging has been developed. This method enables the rapid detection of cyanobacteria in large volumes and has the potential to be transitioned to aerial platforms for field deployment. Prior to field data collection, validation of the technology in the laboratory using monocultures was needed. This report describes the development of the detection method using hyperspectral imaging and the stability/reliability of these signatures for identification purposes. Hyperspectral signatures of different cyanobacteria were compared to evaluate spectral deviations between genera to assess the feasibility of using this imaging method in the field. Algorithms were then developed to spectrally deconvolute mixtures of cyanobacteria to determine relative abundances of each species. Last, laboratory cultures of Microcystis aeruginosa and Anabaena sp. were subjected to varying macro (nitrate and phosphate) and micro-nutrient (iron and magnesium) stressors to establish the stability of signatures within each species. Based on the findings, hyperspectral imaging can be a valuable tool for the detection and monitoring of cyanobacteria. However, it should be used with caution and only during stages of active growth for accurate identification and limited interference owing to stress.

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